/*
 * Created on Feb 11, 2005
 * Created by Alon Rohter
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.pluginsimpl.local.network;

import java.io.IOException;
import java.nio.ByteBuffer;

import org.gudy.azureus2.plugins.network.Transport;
import org.gudy.azureus2.plugins.network.TransportFilter;

import com.aelitis.azureus.core.networkmanager.NetworkConnection;

/**
 *
 */
public class TransportImpl implements Transport {
    private com.aelitis.azureus.core.networkmanager.Transport core_transport;
    private NetworkConnection core_network;

    public TransportImpl(NetworkConnection core_network) {
        this.core_network = core_network;
    }

    public TransportImpl(com.aelitis.azureus.core.networkmanager.Transport core_transport) {
        this.core_transport = core_transport;
    }

    public long read(ByteBuffer[] buffers, int array_offset, int length) throws IOException {
        return coreTransport().read(buffers, array_offset, length);
    }

    public long write(ByteBuffer[] buffers, int array_offset, int length) throws IOException {
        return coreTransport().write(buffers, array_offset, length);
    }

    public com.aelitis.azureus.core.networkmanager.Transport coreTransport() throws IOException {
        if (core_transport == null) {
            core_transport = core_network.getTransport();
            if (core_transport == null) {
                throw (new IOException("Not connected"));
            }
        }
        return this.core_transport;
    }

    public void setFilter(TransportFilter filter) throws IOException {
        ((com.aelitis.azureus.core.networkmanager.impl.TransportImpl) coreTransport()).setFilter(((TransportFilterImpl) filter).filter);
    }

}
